Dictionary/壮年そうねんSounen壮年 (Sounen) is a Japanese noun meaning “prime of life”.Meaningsnounprime of lifeKanji in 壮年壮robust年yearRelated words年year年year今年this year年間(period of) a year何年how many years半年half a year少年boy去年last year年生nth-year student年後years later来年next year年齢age